whistling sound/white smoke exhust Pls Help

i have a 2015 veloster turbo and i believe the turbo has been blown. why? well it started a few weeks ago driving and all of a sudden i felt power lost, i thought maybe i just needed to change a fuel pump and after do that it still wouldnt get power like before. after that incident i started hearing a whistling sound coming from the turbo area every time i accelerate pass 2000rpm and it get louder the higher the rpm. a few days ago white smoke started coming out from my exhust. so today i went a check if i had boost leak and the pipe that connect to the turbo to the intercooler had about 2qt of oil. i know thats not normal.

Can someone help me?

im no mechanic but i do like to save money so i do everything myself.